Which of the following statements is $NOT$ correct about a solution?
- AThe three states of matter,solid,liquid,and gas,may play the role of either solute or solvent.
- BThe component of a solution that constitutes the smaller part is called the solute.
- CWhen water is the solvent,the process of solvation is known as hydration.
- D$A$ true solution is a heterogeneous mixture of two or more substances with a fixed composition.
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